Display cabinet



5 Sheets-Sheet 1 G. F. REED DISPLAY CABINET Feb. 19, 1935.

Feb. 19, 1935. G. F. REED DISPLAY CABINET Filed Sept. 22, 1933 6/ V dflg.

5 Sheets-Sheet 2 l II G. F. REED DISPLAY CABINET Feb. 19, 1935.

Filed Sept. 22, 1953 5 Sheets-Sheet 3 Patented Feb. 19, 1935 UNITED smms TENT OFFICE I6 Chinas.-

Th-is inventio=n relates toimprovemen-ts in display cabinets of the typeincluding a display card farmed of transparent material' mounted upon anenclless canveyor and. adapted to be illuminated during its passage in back of a window or clisplay opening.

Partieula-rl-y, this invention relates to improvements upcm advertising anddisplay devices as shown in the patent of George F. Reed, N0; 1,872,- 6G-7, issueal' August ].6 19.32.

'I'l1e primary object of this invention is to proviele an enclless display sign havi-ng floating sections-hinged together and seeuxedalong the marginal edges to an endless carrier chain.

A further object ofi this invention is to provide a resilien-t connection between the carrier ehain and the fioatingpanels whereby breakage thereof will be minim-ized.

A still fuxther object oi this invention is to provide hinge bars for the transparent panel frames w'nich are provided With novel connections adapted to be: atta.ehed. to. the C3IIiI chain im: the purpose of guiding tha panel fnames in a unique manner.

A still. fuscther objectof thiainvention ist.o proviele fastening. meana betweexi the. panel carrier and the panels. adapted t0 allow relative movement to reduce the strain upon the transparent panel and the resultant breakage t A still further object of this inventionis to provide a casing formed of cast sides, topand bottom Wall members which are preferably c.ellular. t0 reduce the weight and minimize the production cost.

A still further object of this invention is to provid.e a novel reflector mounted directly in back cf the display window formed in the casing front Wall which is adapted to eliminate blind spots ancl glare when the advertising panels are viewed from the outside of the casing.

A still furtner object of this invention is to provicle in combination With the refl'ector a piece of translucent material, preferably glass, f'or the purpose of diffusing the light bef0r6 it is project- C:cl ont0 the transparent display panel thereby giving an even distribution of light whereby the panels may be more clearly visible.

A still further object 0f this invention is to provicla a fioa-ting support for the drive motor and re luction gearing which greatly reduces the vioration and aclds t0 the quiet operation of the clavice.

A still further object of this invention is to provicle rul;aber cushioned feet upon the eabinet having means for re-ceiving a holt. or the l.ike whereby the display casingv may be mounted. on the trank carrier of a motor vehicle= if desired.

Gther objects ancl' advantag es of the invention willbecome apparent duringthe course of thefol lowi-ng descriptixmforming a part of thespeebfication, taken with the drawings, wherein Flgure l is a perspecti-ve view of the casing illustrating the silver ecl front wallhaving an unsilvered. p0rtion for the proiectien o:f the display panels; 1

Figure 2 is a rear elevational view of a motor vehicle showing the display cabinet seeu-red to the 1 trunk rack thereof;

the side frame memhera illustrating the bearings for supporting. the endless carrie r sprockets and shafts; t

Figure 6 is. a vertieal cross-sectional view cf 0ne of the side pre-cast display members and further illustrating the Journal bearings for the endless: carrier shafts and sprocket wheels;

Figure 7 is a t0p elevationalview of a precast bottom frame member which is preterably cellular fo1v the pu1pose of reducing weight and production costs;

Figure 8 is a transverse cross-sectional view of the same showing the centrifugal flanges for reeeiving iastening elements adapted tosecure the sideframe members in place; v

Figure 9 is a perspective view of a easting particularly adaptecl f01" supporting the refiector behincl the window anal also for supporting the opaque transparent material mounted in front of the reflector and adapted to difiuse the light rays projected therethmugh;

Figure 10 is a vertical eross-sectional view 013 the display device illustrating the drive arrange ment and the man-11er in which the endless carriers are arranged relative t the easing am]. light refiector;

Figure 11 is a fragmentary enlarged. view of one of the display panels illustrating the manner in which the same is carried by the endless carrier and further showing the connection between the panel carriers and endless chain carriers;

Figure 12 is an enlarged fragmentary view partly in cross-section, illustrating one of the pintle rods provided for connecting adjoining panel carriers and showing the manner in which the rods are attached 120 the sprocket chains by means of the removable pins;

Figure 13 is an enlarged fragmentary view illustrating in detail the connection between the panel carrier frames and the endless carrle1 chains whereby the panel carrier frames will be floatingly mounted relative td the endless carr1ers;

Figure 14 is an enlarged fragmentary cross-sectional view taken on lines 1414 of Figure 13, looking in the direetion of the arrows, illustrating the resilient connection betwen the panel frames and the endless carriers;

Figure 15 is an enlarged. cross-sectional view taken on line 1515 of Figure 11 looking in the direction of the arrows illustrating the floating connection betweenthe resilient clips and the panel frame whereby a limited movement may be provided to reduce tearing and breakage of the transparent panels;

Figure 16 is an enlarged fragmentary crosssectional view taken on line 1616 of Figure 11, looking in the direction of the arrows illustrating the loosely mounted rivets for connecting the transparent panels 130 the panel frame along the side margins thereof;

Figure 17 is an enlarged fragmentary front elevational view of one f the resilient connections between the panel supporting frame and the endless carrier chain showing the manner in which the former may be distorted without bending or twisting the chain or tearing or breaking the panel frame carrier;

Figure 18 is an enlarged fragmentary crosssectional view illustrating the resilient panel clip and the manner in which the same is secured to the endless carrier chain; and

Figure 19 is a vertical eross-sectional view taken on line 1919 cf Figure 11, looking in the direction of the arrows illustrating the hinge counection between the panel frame and illustrating in detail the manner in which the transparent panels are loosely held between the leaves 01 the hinge so that the free ends of the display panel will have a loose connection therewith.

In the drawings, wherein f0r the purpose of illustrating the invention and wherein like reference charact'ers will be employed 130 designate like partsthroughout the Same, the reference character 5 Will generally be employed to designate a casing having cellular frame side members having vertical uprights 6 connected by transverse cast bars 7, 8, 9, 10 and 11. 'I'he cellular side frarne members are connected at the top and bottom by cellular casting 12 as shown in Figure 7 having transverse east bars 13 and. 14 arranged in criss-cross fashion. The side frame members may be connected to the top and. bottom members by suitable nuts and bolts so that the cast feet 15 will project beyond the bottom member as clearly shown in Figures 1, 3, 4 and. 10.

After the side, top and bottom frame members have been assernbled by means of fastening devices the sheet metal side plates 16 may be secured the1"eto and held in place by vertical angle irons 17 as by means of nuts and bolts 18 and a cover 19 may be fitted upon the frame work so that the side flanges 20 overlap the side Walls 16 and vertical angle irons'l7. Fastening members such as screws 21 may be provided 1'or holding the cover in place.

Similarly, a bottom angle iron 22 maybe provided having a bottom flange which may be counected to the vertical angle irons 17 for the purpose of fi1*flshing the structure and pxoducing a.

completed cabinet. The front wall 23 is preferably formed of a piece of silvered glass presenting a mirror elfect having a portion thereof as at 24 unsilvered adapted to form a window behind which the display panels may be moved and illuminated for display purposes. Certain sections 01' portions of the silvered. panel 23 may be colored as a.t 25 to produce a modernistic efiect; and add 130 the attractiveness of the display sign.

The rear Wall 26 is movably held in place at the top and bottom by means of being received between the flange 20 of the cover 19 and the flange 27 cf the top and bottom frame mexnbers 12. It

will be noted that the angle irons 22 extending around the bottom edge 015 the casing forms a. seat for the lower portion of the rear wall 26 and by lifting upwardly upon the rear wall 26 by means of a band hold 28, the lower edge of the remox'1able rear Wall 26 may be freed from between the flange of the angle bar 22 and the flange 27 formed onthe lower frame piece 12; Louvers 29 may be provided in the rear wall for the purpose of ventilation and allowing the escape of heat produced by the electric motor and illuminating means.

The front Wall 23 may be formed of glass and has its edges received in a similar fashion es the rear wall such as between the marginal flange 27 of the top and bottom members and angle Iren 22. If desired, a packing strip 30 may be interposed b'etween the fiange 20 cf the 110D wall 19 and the angle bar 22 so that shocks retzeived by the easing will not fracture er breakthe gla.ss freut panel 23.

Each of the supporting feet 15 may be provided with rubber cushions 31 held in place by friction and should lt be desired to connect the supporting fest 15 to a rigid support such as the trunk rack 33 of a motor vehlcle 34 shown in Figure 2 each supporting foot 15 may be provided with a screw threaded bore 32 for receiving a fastening holt 35. The cabinet er casing may be fastened securely to other forms of supports such as tables er the like by 4 employing the same fastening means extending into the screw threaded openings 32 formed in each of the supporting feet.

Journalled at opposite ends of the transverse member 8 formed in the side frame member 6 in bearings are rotary shafts 41 provided with sprocket wheels 42 rigidly secured theret0. sprocket wheels 42 are al'ranged on opposite ends of the shafts 41 so that there will be provided a set of sprocket wheels 42 in the front portlon o! the casing and a Set of sprocket wheels in the 1ear portion of the casing adjacent the upper end thereof.

J ournalled in bearings 43 and 44 formed on one of the lower cross bars 10 of the pre-cast side framernember 6 are rotary shafts 45 and 46 respectively. 'Ihe bearing 44 is provided with an eccentric 47 for the purpose of adjusting the rotary shaft 46 t-o incr'ease or decrease the tension on the sprocket ehain which Will be hereinafter more fully described. In order to hold the eccentric 47 in an adjusted position, a sei; screw 48 ls pro vided for this purpose.

Secured to opposlte ends 0f the shafts 45 are sprecket wheels 49 while similarly arranged sprocket wheels are secured rigidl y to opposite end-s of the shaft 46.

Also journalled in bearings 5lformed in the side frame mernbers 6'0n the transverse bars 9 is a shaft 52 having rigidly secured to opposite ends thereof sprocket wheels 53. In addition, the shaft 52 is provided witn a sprocket wheel 54 held in place in a rigid manner, adapted to= receivepower frorn a suitable motor.

Passing over the sprocket wheels 42, 49, 50, and 53 is a pair of endless chains 55 alter the fashion shown in Figure 10 and saicl sprocket chains 55 may be rotated by means o1 the sprocket wheel 54 upon the shaft 52 which is connected to a. sprocket wheel 56 secured on a shaft 57 wl'nch extends out of a reduction geari'ng box 58 by means of an endlesssprocket 59. An electric mator 60 may have its arm'ature shaft 61 connected to the drive shaft 62 of the reducti'ongearing 58 by means of a couple 63 and said electric motor 60 and reduction gearing 58 may be carried by a floating motor support 64 resillently carriedbythe side frame members 66 by means of brackets 65 hav'ing i-nwardly extending arms 66 so that one end 67 of a seil spring 68 is connected thereto and the opposite end of the coil spring 69 is connected to the plate er motor suppdrt 64. In this man-- ne1, rotary moti'on is imparted to the rotary shaft 52 in a silent and even manner whichcauses the sprocket chain 55 to travelover the sprocket wheels 42, 49, 50 and 53 in a slow and even travelling motion.

The position and arrangement of the sprocket wheels and sprockt chains is very similar to the form of the invention shown in the George F. Reed Patent N0Q 1872607 issued August 16, 1932.

An important feature of the invention resides in the manner of arranging the display panels 70 which are preferably formed of a flexible transparent material and which may have printed. '01 otherwise secured thereon designs or ad-vertising matter, It is intend.ed to have a plurality of transparent display panels 70 having longitudinal marginal strips 71 formed of a springy material preferably Swedish steel and rivets 72 may extenol through the marginal strips 71 and marginal edges cf the display panels and. said. rivets may be arranged in a staggered manner and may further be formed smaller than the openings in the lower eolge of the display panels 70 and the marginal strips '71, so that lateral play may be produced between the parts. The end portions of the transparent display sheets 70 are preferably cut on a bias as at 73 to form flap-like end portions adapted to be received between hinge leaves 74 which are U-shaped in cross-section and are provided with enlarged pintle receiving loops 75. Rivets 76 may connect the hinge leaves 74 with the marginal strips 71.

Extending through the pintle receiving loops 0f the hinge members is a rod 77 having an axial hure 78 formed in the opposite ends thereof and each of the bores 78 is adapted to receive the reduced portion of a pin 79 formed on the end. of one of the sprocket chain axles 80- as clearly shown in Figure 12 and interposed between the reduced portion 79 and the axle 80 is an annular boss 81 adapted to engage the inner edge of the sprocket chain links55 andsimultaneously the outer end of the pintle rod '77Q It is obvious, that by separating the sprocket chains 55,. that is moving the same away from each other, that the pintle rods 77 may be withdrawn from the reducecl pins 79 for the purpose of removing the panels 70 and their enc;losing frames '71. It is tobe understood that the free ends of the panels 70 are slipped in between the hinge Ieaves 74 and are not fastened laut are allowed to move relative thereto. The connection constitutes a means of guiding the free ends of the transparent panels 70 rather thanproviding a securing means theretor.

It will be noted that-the trans'parent panels 70: and frames 71 are secured. to the endless carrier chains 55 in muCh the sarne manner as the transparent panels shown in the George F. Reed Patent N0. 1872,607 and in addition to the guide means or pirrtle rode 77 for connecting the transparent panels to the endless chalns, there is provided side resilient clips which connect the marginal metal strips 71 to the sprocket chain 55 in a manner which will allow relative movement between the strips and chain without tearing or otherwise breaking the transparent panels 70. The resilient conneotion cornprises a-t spaced intervals angle members 82 having studs 83 provided with reduced screw threacled portions 84. The studs 83 are adapted to extend through evelets 72 which connect the marginal strips 71 wlth the transparent panels 70 and it will be noted, that the openings formed in the eyelets or rivets 72 are of a greater diameter than the over-all dimension of the boss er stud 83 so that a limited amount of 'play may be provided and whereby the transparent panels will be floatingly carried by the sprocket chain 55. Threaded on the upper screw threaded reduced portion 84 ofthe stud 83 is a nut 85 to secure the bracket 82 in place and said bracket 82 is provided with a portion 86 Which extends in'a parallel plane with the side strip 71. The free end 013 the parallel portion 86 extends upwardly as at 87 and is proviclecl with spaced openings for receiving elongated axles 88 which also form pins fbrthe connecting links 015 the sprocket chain 55 as clearly shown in Figures 13, 14 and 15. The Iree ends of the axles 88 are connected by means of a link 89 which is substantially similar to one of the side links cf the sprocket chain 55 and said link is held in place by means of a chain Clip 90. Interposed between the upturned end 87 of the carrier bracket 82 and theconnecting link 89 are coil springs 91 which encircle the elongated axles or studs 88. 'I'his construction allows the brackets 82 to moverelative to the sprocket chain 85 as shown in Figure 7 in a distorted manner which is produced when certairi of saicl panels 70 are passing over the sprocket wheel 42, 49, 50 and. 53. Figure 18 shows an elongated axle 88 having a reduced portion 88a which connects the links of the chain When certain of the transparent panels 70 pass over the sprocket wheels as above mentionecl, they become distorted and the bracket 82 will pull away from the chain 55 against the aotion of the coil springs 91. Direct pull may be overcorne by means cf the ooil springs 91 in addition to longitudinal stresses or strains which produce the disarrangement shown in Figure 17. Under these conditions, only one of the coil springs 91 will compress while the other will remain in its normal position.

In Figure 19 is shown in detail, one of the pintle rods 77 which is shown in cross section so that the transparent panels 70 may have the free ends secured therebetween as at 70a. It is intended to form the hinge leaves 74 With pintle reeeiving loops 75 arranged and spaced alternately at the top and bottom so that the entlre frame may be removed from the carrier chain and another frame substituted carrying different aolvertising matter without altering the frame 01 the adjacent hinge leaves 74 along with the pintle receiving loops '75.

Supported by the sicle frame members 6 and positioned directly in back of the unsilvered portion 44 01 the mirror 23 is a rectangular frame member 93 clearly shown in Figure 9 in perspective. The frame member 93 is provided with oppositely directed arms 94 having openings 95 for receiving fastening elements such as screws 01' the like. The rectangular frame 93 is adapted to define a window so that the transparent display panels may be clearly visible from the exterior of the casing. Formed integral with the oppositely extending arms 94 of the rectangular frame 93 and extending inwardly therefrom are angle brackets 96 having offset portions 97 provicled with apertures'98 whereby a mirror or reflec-tor 99 1nay be secured to the offset portions 97 by means of machine screws 100 extending therethrough and passing through the openings 98. The refiector 99 is provided witn longitudinal angular surfaces 101, 102, 103 and 104 for the purpose Cf directing the rays of light emitted from electric light bulbs 105 positionecl as shown in Figure 10 between the respective angular Walls 102, 103 and 101 and 104. The light emitted from the bulbs 105 is projected through an opaque panel 106 where the light is diffused and illuminates one of the transparent panels 70 which Will be positioned in back of the rectangular frame er window 93 as when being carried by the carrier chain 55. The opaque panel 106 may be fastened in place upon the offset portion 97 of the rectangular frame 93, being mounted between the ofiset portion 97 and the reflector 99 so that the screws 100 will securely clamp the opaque material 106 therebetween. At opposite sides of the rectangular frame 93 there may be provided an angle strap'l08 having its free ends 109 securely retained in place by the screws 100. 'Ihe angle straps 108 at opposite ends of the reflector 99 1nay retain the electric lamp bulbs 105 in their spaced positions and at the Same time may folm a brace for the reflectorv 99.

One of the side frame members 6 is provicled with a cast portion 110 including a downwardly extending portion 111 projecting downvvardly. from the Journal 51 and branching into arms 112 which connect to the transverse frame bar 10 thereby forming a pocket 113 at opposite ends of which are cut outs 114. Received within the opening 113 is an electric switch 115 of a double type having a set of contacts 116 to Which may be connected line wires 117 for feeding current to the electric bulbs 105. 'Ihe bulbs may be connectecl in series as by means of a lead line 118. The svvitch casing 115 is also provided with contacts 119 having lead lines 120 which may connect to the electric motor 60. Power is suppliecl through the switch housing 115 by means of a cable 121 adapted to be connected to a suitable source of current capable of illuminating the bulbs 105 and operating the motor 60. The svvitch casing 115 partially extends through an opening 122 formed in one of the side walls 116 and saicl switch casing 115 is provided With operating buttons 123 whereby the motor or electric bulbs may be operated selectively.

Formed in one of the side Walls 16 is an Opening adjacent the electric bulb 105 which is adaptecl to be closed by a cover plate 124 held in place by suitable machine screws 125. By removing the cover plate 124, the electric bu1bs 105 may be easily reached for the purpose of repair 01' 11 desired, the reflector 99 may be wiped and clea.ned as well as the opaque glass or plate 106.

It is to be understood, that various changes in the shape, size and arrangement 015 pa.rfs may be resorted to without departing from the spirit of the invention or the scope cf the sub-joined claims, and that the form herewith shown and described is to be taken as the preferred embodiment of the same.

I claim:

1. In display apparatus of the character described-, a pair of endless carriers constructed and arranged to travel in a tortuous path, and display panels supported on the carriers for limited movements relative to the carriers whereby disrupting strains on the panelsare eliminated when the latter travel in tortuous paths, the panel support on the carriers including a tensioned clip having relatively movable parts.

2. In a display apparatus 015 the character described, an endless carrier movable through arenate paths in a cycle of operation, and panels loosely carried by the carrier and adapted to move relative to the carrier when passing through arcuate paths for relieving pulling strains on the panels, the connection between the carrier and panel including a tensioned clip having relatively movable parts.

3. In display apparatus of the character describecl, an endless carrier constructed and arranged to travel in a tortuous path, and hinged connectecl display panels resiliently attached to the carrier at opposite sides thereof, each panel inclucling a frame and a panel sheet loosely supported in the frame for movement relative to the frame during travel of the carrier and frame.

4-. In a display apparatus of the character descrioed, an endless carrier movable through arcuate paths in a cycle of operation, and hinged counected display panels resiliently attached to the carrier at opposite sides thereof, each panel in-' cluoling a frame and a panel sheet loosely supported in the frame for movement relative to the frame during travel of the carrier and frame.

5. In a display apparatus of the character described, an endless carrier movable through arenate paths in a cycle 0f operation, and hingedly connected display panels resiliently attached to the carrier, each panel including a rectangular frame having a pair of strips at the hinged end and a panel sheet loosely attached to the sides of the frame and freely extending at its ends betvveen the pairs of frame strips.

6. A display device of the character described comprising acasing, an endless carrier mounted in the casing, translucent display panels mounted 011 the endless carrier, resilient connections therefor and means f01' driving the endless carrier, the resilient connections including a two part spring clip having the parts respectively connected to the carrier and. panel.

7. A display device of the character described comprising. a casing, horizontal shafts mounted in the casing, sprocket wheels secured to opposite ends of said shafts a pair 013 spaced sprocket chains passing over the sprocket wheels a display sign mounted be tvveen the sprocket cha.ins and moving in spaced relation to theShafts, and resilient connections for securing the display signs to the sprocket chains and moving them in arenate paths centering on the shafts.

8. A display device 01 the character described, c0mprising a casing having a display opening berein, rofary horizontal shafts mounted in the top and bottom of the casing, sprocket wheels mounted ab opposite ends of the rotary shafts, a sprocket 'chain for each sprocket wheel at the encls of the rotary shafts transparent display signs, spring clips connecting the display signs to the socket chains, illuminating means rearwardly of the display opening and the adjacent run of the display sign, and a crenelated reflector platze rearwardly of the illuminating means having angle portions projecting between the illuminating means for maximum refiection.

9. A display device of the character described comprising a casing having a display opening therein, a pai1 of parallel rotary shafts horizontally mounted in the top of the casing, a similar pair of shafts mounted in the bottom of the casing, sprocket wheels mounted on opposite ends of the shafts, endless sprocket chains passing over the sprocket wheels, dis'play signs resiliently suppored between the sprocket chains, the support including a series of tensioned multi-part spring clips, illuminating means rearwardly of the display opening and the adjacent run of the display sign, a crenelated reflector plate rearwardly of the illuminating means having angle portions projecting between the illuminating means for maximum refiection and meahs foT rotating tne sprocket wheels.

10. A display device comprising a casing, an endless carrier mounted therein, comprising spaced sprocket chains, display panels carried between the sprocket chains, an angle bracket loosely secured so said display paneL guide bars secnred to the sprocket chain, 0011 springe encircling ehe guide barsand engaging Ehe angle bracket, a plate secured 130 the free ends of'the guide bars for engaging the opposite end of the coil spring whereby movement between the display panels and sprocket chains may be effected, anal means for driving the enclless carrier.

11. A display device comprising a casing having a vision opening, an endless carrier mounted therein, display panels mounted. on the endless carrier, two-part spring clips for resiliently counecting the panels 110 the endless carrier, crenelated reflector plates mounted rearwardly cf the Vision opening in the casing illuminating means between the reflector and display p-anels for projecting light through the display panels and vision opening and means for driving the endless carr1er.

12. A display devi'ce including a casing, an endless carrier mounted therein comprising sprocket chains passing over sprocket wheels a1: each side of the casing, pintle bars, connecting the sprocket chains, means for detachably securing the pintle bars in place, a metallic panel frame, having hinge leaves mounted on tl1e pintle ba1s, a transparent panel loosely mounted in the panel frame, ancl resilient; means interposed between the pintle bars connecting the sprocket chains to the panel frames.

13. A display device including a casing having a display window, an endless carrler mounted within ehe casing comprising spaced parallel sprocket chains, detachable rods connecting tne sprocket chains a1; spaced intervals, display panel frames hinged 110 the detachable rods, transparent display panels loosely carried by the panel frames, spring means for connecting the longitudinal edges of the display panel frames to the sprocket chains, and means fr illuminating the display panels as they move in back of a vision opening formed in the display casing.

14. A display device comprising a casing having a window, an endless carrier mounted in the casing, display panel frames resiliently secured 130 the endless carrier, adapted to move in back of the casing window, an opaque plate mounted in back of the display panelsadjacent the casing window, electric lamps for projecting light through the opaque plate and display panels, and a reflector positionecl behind the electric lamps having angular arranged faces projecting between adjacent lamps.

15. In display apparatus of the character described, a carrier and a panel frame supported by the carrier, the support including a tensioned clip formed of relatively movable parts resiliently engaged with the carrier am]. loosely engaged with the panel frame.

16. In display apparatus of the character described, a carrier and a panel frame supported by the carrier, the support including a tensioned. clip formed of relatively movable parts resiliently engaged with the carrier and loosely engaged with the panel frame, and said. Clip belng constructed and arranged to permit substantially universal movements between the carrier and pane1 frame whereby all strains are removed from the panel frame.

GEORGE F. REED. 

